Ski pin



FIG. 1 is a front elevational view of a ski pin showing my new design;

FIG. 2 is a top plan view, the broken line showing of a clasp is for illustrative purposes only and forms no part of the claimed design;

FIG. 3 is a rear elevational view; and,

FIG. 4 is a side elevational view. 

The ornamental design for a ski pin, as shown and described. 